v.
    - determine mathematically.
 - 
(calculate on)
 include as an essential element in one's plans.
 - intend (an action) to have a particular effect.
 - US dialect suppose.
 
 
  Derivative
  
  Etymology
  ME: from late L. calculat-, calculare ‘count’, from calculus ‘a small pebble (as used on an abacus)’.